Features: ` Three 128-Position Linear Potentiometers (Two 10k, One 90k)
` NV Wiper Storage
` 0 to 5.5V on Any Potentiometer Terminal Independent of VCC
` Low End-to-End Temperature Coefficient
` Operates on an Industry-Standard 2-Wire Bus
` Write-Protect Pin
` Supply Voltage: 3V or 5V
` Operating Temperature Range: -40°C to +85°C
` Packaging: 20-Pin TSSOPApplication·Power-Supply Calibration
·Mobile Phones and PDAs
·Fiber Optics Transceiver Modules
·Portable Electronics
·A Small, Low-Cost Replacement for Mechanical PotentiometersPinout
SpecificationsVoltage on VCC Pin Relative to Ground.................-0.5V to +6.0V
Voltage on SDA, SCL, A0, and WP
Relative to Ground ........................................................-0.5V to
VCC + 0.5V
Voltage on L0, L1, L2, W0, W1, W2, H0, H1, and
H2 Relative to Ground .........................................-0.5V to +6.0V
Current Through W0, W1, and W2....................................±4mA
Operating Temperature Range .......................-40°C to +85°C
Programming Temperature Range .....................0°C to +70°C
Storage Temperature Range ........................-55°C to +125°C
Soldering Temperature ....................See IPC/JEDEC J-STD-020A
Specification
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe DS3903 contains three nonvolatile (NV) low temperature coefficient digital potentiometers, which can be accessed through a 2-wire bus. It operates in both 3V and 5V systems, and it features a write-protect pin that can lock the positions of the potentiometers. An address pin allows two DS3903s to be placed on the same 2-wire bus.
DS3903 Data Sheet
